When you enable server statistical logging for the Database Server, a log file is created in the FileMaker Server/Logs/ folder. All of the values that you see on the Statistics > Server tab in Admin Console are timestamped and written to a file. See Viewing server statistics.

You can view these server statistics by opening the Stats.log file in any application that can read tab-delimited data or in the Console application (macOS).

When the Stats.log file reaches the log size specified on the Database Server > Logging tab, it is renamed stats-old.log and a new Stats.log file is created.